I agree!
I'd looked for a while without finding "Dad's" and settled at first for acetone. That was about hopeless; 'took about two hours to strip a panel with collateral damage. When I finally found the "Dad's" stripper, I finished the entire wing in much less than that time. Much of the silkspan just lifted off, leaving only a bit of color stains to remove. Great stuff!
Pictures below are of my P-Force, whose fuselage broke in three places. Since I felt that nose vibration was a cause of run-away problems on my FP-.35 and LA-.40, I opted to save the wing, with added stub ribs, and build a new fuselage. Since I knew I could build and finish considerably lighter than the 40+ oz original, I elected to remove all coverings and start fresh, with lighter finish and an LA-.25. Here are pictures during and after usie of the Dad's stripper. I have forgotten which pictures I loaded below, but on at least one, you can see light areas where I applied the stripper with the spray bottle and a brush to spread it better. If you let it set too long, it will re-harden, but with enough applied, it will usually release the covering. If not, just scrape off the finish that has been curdled and reapply to the adhering areas. I never had to apply more than twice. In the final picture, you can see that the color was removed enough to apply a lighter clear finish that will look "OK" on this utility stunter.
Of course, I've gotten distracted...BUT I'll finish it for next season.
SK